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2. GENERAL INFORMATION STRYKER 125/150
TROUBLESHOOTING
ENGINE WILL NOT START OR IS HARD TO START
Inspection/Adjustment Symptom Probable Cause
Check if fuel reaches
carburetor by loosening
drain screw Empty fuel tank
Clogged fuel line between fuel
tank and carburetor
Clogged float valve
Clogged fuel filter
Fuel reaches Fuel does not Clogged fuel tank cap breather
carburetor reach carburetor hole
Clogged fuel valve strainer
Clogged fuel valve passage
Remove spark plug and Clogged carburetor air balance
install it into spark plug tube
cap to test spark by
making it contact the Faulty spark plug
engine Fouled spark plug
Faulty CDI unit
Spark jumps Weak or no spark Faulty pulser coil
Faulty exciter coil
Faulty ignition switch
Broken or shorted ignition coil
Test cylinder compression
Faulty or slipping clutch
Normal Low or no Valve clearance too small
compression compression Valve stuck open
Worn cylinder and piston rings
Leaking cylinder head gasket
Start engine by follow-
ing normal starting
procedure
Faulty choke control system
Engine does not Engine fires but Leaking intake manifold
fire does not start Incorrect ignition timing
Incorrectly adjusted pilot screw
Remove spark plug and
inspect again
Flooded carburetor
Dry spark plug Wet spark plug Throttle valve excessively open
Clogged air cleaner
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